Window-shade-spring adjuster



0 H. WISE. WSNDOW SHADE SPRING ADJUSTER. APPLICATION FILED JUNE 1, L9]?- RENEWED OCT. 21, I919.

Patented May 25, 1920.

. INVENTOH fiawies H. Wis e/ WITNESSES ATTOR N EY PATENT oFFICE.

CHAR-LES H. WISE, OF WVINIIETKA, ILLINOIS.

WINDOW-S HADlEl-SPLRING ADJUSTER.

real ze Application filed J'une i, 1917, Serial No. 172,255.

To all whom. it may concern:

Be it known that 1, Cinemas H. lsn, a citizen of the United States, residing at lVinnetka, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in lVindo'w-Shade- Spring Adjusters,- of which the following 1s a specification.

This invention relates to an improved window shade spring adjusted and the principal object of the invention is to prov de an adjuster for a window shade spring which may be connected with the shade roller supporting bracket and engage the spring pintle so that the pintle maybe held and the spring tightened by turning the roller to wind the curtain thereon with the roller still supported from the supporting bracket.

Another object of the invention is to so construct this adjuster that the housing in which the socket plate is rotatably mounted may be easily and securely con nected with the shade supporting bracket.

Another object of the invention is to pro ride an improved type of pawl for permitting rotation of the socket plate or disk in one direction and normally preventing rotation of this disk in the opposite direction.

Another object of the invention is to so construct and mount this pawl that when de sired, it may be moved to an inoperative position.

This invention is illustrated in the accompanying drawings, whereinz-- Figure 1 is a perspective vlew showing a curtain supported from a bracket having the improved spring adjuster connected therewith.

Fig. 2 is a sectional view through the improved spring adjuster,

Fig. 3 is a view looking at the inner face of the socket disk,

Fig. 4: is a .view looking at the inner face of the housing in which the disk of Fig. 3 is rotatably mounted, and

Fig. 5 is a perspective view of the pawl.

This spring adjuster is provided with a housing having tongues 11 extending therefrom so that the housing may be connected with the curtain bracket 12 by placing the housing against the bracket and bending the tongues to engage the bracket. This housing is provided with a cutout 13 providing a passage through which the pintle of the curtain roller 14 may pass to Specification of Letters Patent.

Patented May 25, 19 20.

Renewed October 21, 1919. Serial No. 332,316.

engage the socket plate or disk mounted in the housing and the housing is further provid'edwith a slot 15 through which may eX- tend the arm 16 of the pawl 17 positioned in the said housing and provided witha stem or pin 18 pivotally mounting the pawl. From an inspection of Fig. 1 and Fig. 2, it will be readily seen that when it is desired to render the pawl inoperative, the arm 16 may be grasped and the pawl thus swung to an inoperative position. The socket plate 19 is positioned within the housing and is provided with side walls 20 extending to engage the outer wall of the housing as shown in Fig. 2 and will serve to hold the body of the socket plate in spaced relation to the outer wall of the housing. 11 slot 21 is formed in this socket plate and is of substantially the same width as the cutout or notch 13 formed in the wall of the housing so that the pintle may be passed into slot 21. Along the side portions of this slot 21, there has been provided side flanges or strips 22 extending from the inner end of the slot 21 and terminating short of the outer end thereof as shown in Fig. 3. These flanges or strips 22 terminate at such a point that when the socket plate attempts to rotate in the housing in one direction, it can only rotate until the free end portion of the pawl has moved between the two flanges. The pawl will then engage one flange and prevent further rotation of the socket plate. t will thus be seen that the pawl will prevent rotation of the socket plate in one direction but will permit free rotation of the plate in the opposite direction.

lVhen in use, the curtain roller 1st will be put in place in the usual manner with the winding pintle extending through the slot 23 thereof into the well 2% at the inner end of the slot 23. As this pintle is passed through the slot 23, it will also pass into the slot 21 of the socket plate or disk 19. The spring of a curtain is usually wound before it is put in place but after the curtain is in place it is often found that the spring has not been wound tight enough thereby making it necessary to remove the curtain and wind the spring. It also often happens that after a curtain has been in use for some time, the spring will become weak thus making it necessary to remove the curtain and rewind the spring. lVith this device it will not be necessary to remove the roller as the curtain will be wound upon the roller as far as the spring will serve to wind the curtain thereon and the roller can then be rotated by hand to wind the curtain upon the roller and the roller with the pawl holding the socket plate against rotation thus causing the spring to be wound. The curtain can now be drawn down and then released and permitted: to wind upon the roller. If it is found that the spring needs additional winding, the operation can be repeated until the spring has been wound tight enough to wind the curtain completely upon the roller. If it is found that the spring is wound too tight, this can be easily remedied by moving the pawl to an inoperative position and permitting the curtain to be unwound part way and then rewound upon the roller with the pawl in an operative position. It will thus be seen that a very eliicient device has been provided for adjusting the spring of a curtain roll with the roller supported upon the curtain bracket. 7

What is claimed is y 1. The combination with a curtain supporting bracket of a housing connected therewith, a socket member rotatably mounted in the housing for engagement with the spring winding pintle of a roller, and means for releasably holding the socket member against rotation in one direction.

2. The combination with a curtain supporting bracket of a housing connected therewith, a socket plate rotatably mounted in the housing for engagement with the spring winding pintle of a roller, and a pawl pivotally connected with the housing for engaging the socket plate and releasably holding the plate against rotary movement in one direction.

3. The combination with a curtain supporting bracket of a housing connected therewith, a socket plate rotatably mounted in the housing and provided with a slot for receiving the spring winding pintle of a curtain roller, abutment flanges extending vided with side flanges holding the body of.

the socket plate in spaced relation to the housing, the socket plate being provided with a radially extending slot and with flanges extending along the sides of the slot, and a pawl pivotally connected with the housing and engaging the flanges extending along the slot to releasably hold the socket plateagainst rotation in one direction.

5. A. device for adjusting the spring of a curtain roller comprising a housing, a socket plate in said housing and having rotary movement therein, a pawl pivotally mounted in the housing for engaging the socket plate and releasably holding the socket plate against rotary movement in one direction, and an arm extending from the pawl through a slot in the housing permitting the pawl to be moved to an inoperative position.

6. A spring adjusting device for the spring of a curtain roller comprising a housing having an outer wall and side walls, the side walls being provided with a slot, a socket plate rotatably mounted in the housing and provided with a slot for registering with the slot of the housing, and a pawl carried by the housing and engaging the socket plate to releasably hold the socket plate against rotary movement in the housing in one direction.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES H. WISE.

Witnesses:

THoMAs F. DoNAHUn, GEO. W. MILLER. 

